package com.itheima.health.mapper;

import com.itheima.health.pojo.Member;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface MemberMapper {
    //根据手机号查询会员
    Member findByTelephone(String telephone);
    //添加会员
    void add(Member member);
    //根据日期统计会员数量
    Integer findMemberCountBeforeDate(String m);
}
